* {
    margin: 0;
    padding: 0;
    font-family: 微软雅黑, serif;
}

body {
    background: #F3F3F3;
}

/*背景*/
.background {
    margin-top: -350px;
}

.bg-img {
    height: 550px;
    width: 100%;
    /*height: 780px;*/
    background-image: linear-gradient(to top, #F3F3F3, transparent), url("/pages/img/main_img/main_background.jpg");
    background-position: center;
    background-blend-mode: normal;
    background-size: 100%;
}

/*主页部分*/
.top-blank {
    margin: 0 auto;
    width: 860px;
    height: 100px;
}

.main {
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.7);
    width: 860px;
    height: 450px;
    box-shadow: 0 1px 25px 5px #808080;

}

.main-item {
    display: flex;
    /*float: left;*/
    position: relative;
    margin-top: 30px;
    width: 90%;
    height: 180px;
    background: white;
    overflow: hidden;
    font-size: x-large;
    text-align: center;
    line-height: 180px;
}

.list-right {

    float: right;
    width: 40%;
}

.list-left {
    float: left;
    width: 40%;
}

.list-left > div {
    border-radius: 10px 0 0 10px;
    margin-left: 9.3%;
}

.list-right > div {
    margin-top: 8.5%;
    border-radius: 0 10px 10px 0;
}

@keyframes page_hover_right {
    0% {
        transform: translate(0);
        width: 316px
    }
    50% {
        transform: translate(7%);
        width: 316px
    }
    100% {
        transform: translate(14%);
        width: 316px
    }
}

@keyframes page_hover_left {
    0% {
        transform: scaleX(1) translate(0);
    }
    50% {
        transform: scaleX(1) translate(-7%);
    }
    100% {
        transform: scaleX(1) translate(-14%);
    }
}

.list-right > .main-item:hover {
    animation: page_hover_right 0.2s;
    animation-fill-mode: forwards;
    cursor: pointer;
}

.list-left > .main-item:hover {
    animation: page_hover_left 0.2s;
    animation-fill-mode: forwards;
    box-shadow: inset -20px 0 25px -20px;
    cursor: pointer;
}

#app-download {
    width: 317px;
}

#music-upload {
    width: 317px;
}

#forum {
    width: 317px;
}

#notice {
    width: 317px;
}

#app-download > img {
    width: 317px;
    background-size: cover;
    border-radius: 10px 0 0 10px;
    border: none;
}

#music-upload > img {
    width: 317px;
    background-size: cover;
    border-radius: 10px 0 0 10px;
    border: none;
}

#notice > img {
    width: 317px;
    background-size: cover;
    border-radius: 0 10px 10px 0;
    border: none;
}

#forum > img {
    width: 317px;
    background-size: cover;
    border-radius: 0 10px 10px 0;
    border: none;
}

.list-left > .main-item:after {
    position: absolute;
    left: 0;
    top: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    content: attr(data-text);
    transition: all 0.3s ease;
    transform: translateX(100%);
    color: #FFF;
}

.list-right > .main-item:after {
    position: absolute;
    left: 0;
    top: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    content: attr(data-text);
    transition: all 0.3s ease;
    transform: translateX(-100%);
    color: #FFF;
}

.main-item:hover:after {
    transform: translateX(0);
}

/*标题部分*/
.title {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    display: inline-block;
    width: 290px;
    height: 500px;
    margin: 0 auto;
    margin-top: -30px;
    margin-left: -60px;
    /*float: left;*/

    z-index: 100;
    /*left: 0;
    right: 0;
    margin-left: auto;
    margin-right: auto;*/
    box-shadow: 0 1px 25px 5px #808080;
}

.logo {
    margin-left: auto;
    margin-right: auto;
    margin-top: 12%;
    width: 200px;
    height: 200px;
    background-size: 100%;
    border: 1px solid;
    border-radius: 25px;
    /*background: #003eff;*/
    display: block;
}

.webname {
    margin-left: auto;
    margin-right: auto;
    margin-top: 40px;
    text-align: center;
    width: 200px;
}

/*底部*/
.bottom {
    margin-top: 100px;
    width: 860px;
    height: 200px;
    margin-left: auto;
    margin-right: auto;
}

.bottom > ul {
    list-style: none;
}

.bottom-item1 {
    height: 220px;
    float: left;
    width: 30%;
    text-align: center;
}

.bottom-item2 {
    height: 220px;
    float: left;
    width: 60%;
}

.qq-group {
    width: 100%;
    height: 200px;
    border-right: 1px solid #C5C5C5;
    background: url("/pages/img/main_img/2dcode.png") no-repeat;
    background-position: center;
}

.developer {
    margin-top: 4%;
    text-align: center;
    color: #666666;
}

.developer > #warning {
    color: red;
    font-weight: bolder;
}

.developer > p > a {
    color: black;
    text-decoration-line: underline;
}
